APA (7th ed.) Citation

Callahan, J. R. (2010). Emerging biological threats: A reference guide. Greenwood Press.

Chicago Style (17th ed.) Citation

Callahan, Joan R. Emerging Biological Threats: A Reference Guide. Santa Barbara, Calif.: Greenwood Press, 2010.

MLA (9th ed.) Citation

Callahan, Joan R. Emerging Biological Threats: A Reference Guide. Greenwood Press, 2010.

Warning: These citations may not always be 100% accurate.